Hello all,

i was wondering what the differences were on the w123 climate control/ac systems.


1. I have a 240d with the manual climate control (the manual knobs and switches). This i think is probably the most desirable.

2. The old style vertical climate control. This has the switches in a vertical order and are usually on the 75-80/81 cars. This is all vacuum controlled and not desirable.

3. This is the one im not clear on. This is the climate control in the 81-85 models that has buttons in one row and usually surrounded by zebra wood (and circle wheel to flip temperatures). I am curious are these easy to maintain fix, are they vacuum or electrical, and are there motors/other annoying things to fix beyond the unit itself.


I have recently redone the entire A/C in my 240d (manual) system. I redid everything but the hoses and evap. I was considering doing the same on the later year climate control... but don't want to go through finding vacuum leaks and other bizzaro motors (besides blower of course).


Thanks in advance.